403155642 has 16 divisors (see below), whose sum is σ = 848748960. Its totient is φ = 127312272.

The previous prime is 403155631. The next prime is 403155677. The reversal of 403155642 is 246551304.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1768113 + ... + 1768340.

It is an arithmetic number, because the mean of its divisors is an integer number (53046810).

Almost surely, 2^403155642 is an apocalyptic number.

403155642 is an abundant number, since it is smaller than the sum of its proper divisors (445593318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

403155642 is a wasteful number, since it uses less digits than its factorization.

403155642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3536477.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 403155642 is about 20078.7360657986. The cubic root of 403155642 is about 738.7388074381.

The spelling of 403155642 in words is "four hundred three million, one hundred fifty-five thousand, six hundred forty-two".